προστικτέον
προστικτέον, one must punctuate before (Supp.)
Alas! Could not find the search term προστικτέον.
Found the closest form προστιθέασι. Other nearby forms can be found in the wordwheel, or perhaps try searching again without accents.
Morpho works with a static database. If you like, you can compare the output of Morpheus.
Parsed as:
✓ present active indicative 3rd plural of προστίθημι
No checked forms of προστικτέον in the morphology database.